/tmp/temp* pig temporary directories should be unique.
------------------------------------------------------
Key: PIG-2554
URL: https://issues.apache.org/jira/browse/PIG-2554
Project: Pig
Issue Type: Bug
Affects Versions: 0.9.1, 0.9.0, 0.8.0
Reporter: Mitesh Singh Jat
The /tmp/temp* directory is generated using Random.nextInt(). The collision of
the random integers generated may occur. This issue was seen quite a few times.
{noformat}
4418 [main] ERROR org.apache.pig.tools.grunt.Grunt - You don't have permission
to perform the operation. Error from
the server: org.apache.hadoop.security.AccessControlException: Permission
denied: user=user1, access=EXECUTE,
inode="temp-1980965992":user2:hdfs:rwx------
4419 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 6007: Unable to
check name
hdfs://nn1/tmp/temp-1980965992/tmp-33521837
4430 [main] ERROR org.apache.pig.impl.io.FileLocalizer -
org.apache.hadoop.security.AccessControlException:
org.apache.hadoop.security.AccessControlException: Permission denied:
user=user1, access=ALL,
inode="temp-1980965992":user2:hdfs:rwx------
{noformat}
A workaround is to change the base directory(for some group) *pig.temp.dir* to
avoid this rare conflict.
for example:
{noformat}
pig -Dpig.temp.dir=/tmp/$USER/$RANDOM pig_script.pig
{noformat}
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